/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:57:24,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:57:24,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:57:24,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:57:24,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:57:24,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:57:24,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:57:24,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:57:24,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:57:24,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:57:24,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:57:24,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:57:24,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:57:24,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:57:24,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:57:24,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:57:24,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:57:24,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:57:24,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:57:24,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:57:24,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:57:24,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:57:24,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:57:24,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:57:24,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:57:24,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:57:24,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:57:24,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:57:24,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:57:24,452 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:57:24,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:57:24,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:57:24,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:57:24,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:57:24,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:57:24,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:57:24,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:57:24,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:57:24,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:57:24,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:57:24,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:57:24,459 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 07:57:24,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:57:24,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:57:24,484 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:57:24,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:57:24,485 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:57:24,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:57:24,485 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:57:24,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:57:24,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:57:24,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:57:24,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:57:24,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:57:24,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:57:24,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:57:24,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:57:24,487 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:57:24,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:57:24,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:57:24,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:57:24,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:57:24,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:57:24,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:24,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:57:24,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:57:24,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:57:24,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:57:24,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:57:24,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:57:24,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:57:24,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:57:24,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:57:24,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:57:24,954 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:57:24,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:57:24,957 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:57:24,958 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 07:57:25,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b44c11bc/2cfd0073516c4fb2bb8997f2403b92ac/FLAG15edf3f1b [2020-09-25 07:57:25,637 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:57:25,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label52.c [2020-09-25 07:57:25,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b44c11bc/2cfd0073516c4fb2bb8997f2403b92ac/FLAG15edf3f1b [2020-09-25 07:57:25,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b44c11bc/2cfd0073516c4fb2bb8997f2403b92ac [2020-09-25 07:57:25,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:57:25,895 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:57:25,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:25,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:57:25,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:57:25,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:25" (1/1) ... [2020-09-25 07:57:25,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c30f9fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:25, skipping insertion in model container [2020-09-25 07:57:25,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:57:25" (1/1) ... [2020-09-25 07:57:25,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:57:25,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:57:26,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:26,555 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:57:26,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:57:26,711 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:57:26,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:26 WrapperNode [2020-09-25 07:57:26,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:57:26,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:57:26,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:57:26,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:57:26,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:26" (1/1) ... [2020-09-25 07:57:26,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:26" (1/1) ... [2020-09-25 07:57:26,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:26" (1/1) ... [2020-09-25 07:57:26,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:26" (1/1) ... [2020-09-25 07:57:26,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:26" (1/1) ... [2020-09-25 07:57:26,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:26" (1/1) ... [2020-09-25 07:57:26,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:26" (1/1) ... [2020-09-25 07:57:26,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:57:26,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:57:26,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:57:26,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:57:26,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:57:26,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:57:26,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:57:26,925 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:57:26,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:57:26,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:57:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:57:26,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:57:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:57:26,927 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:57:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:57:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:57:28,550 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:57:28,551 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:57:28,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:28 BoogieIcfgContainer [2020-09-25 07:57:28,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:57:28,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:57:28,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:57:28,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:57:28,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:57:25" (1/3) ... [2020-09-25 07:57:28,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2916c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:28, skipping insertion in model container [2020-09-25 07:57:28,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:57:26" (2/3) ... [2020-09-25 07:57:28,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2916c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:57:28, skipping insertion in model container [2020-09-25 07:57:28,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:57:28" (3/3) ... [2020-09-25 07:57:28,568 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label52.c [2020-09-25 07:57:28,580 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:57:28,591 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:57:28,617 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:57:28,654 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:57:28,655 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:57:28,655 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:57:28,655 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:57:28,655 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:57:28,655 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:57:28,656 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:57:28,656 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:57:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:57:28,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 07:57:28,701 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:28,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:28,703 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:28,712 INFO L82 PathProgramCache]: Analyzing trace with hash 963589103, now seen corresponding path program 1 times [2020-09-25 07:57:28,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:28,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293433763] [2020-09-25 07:57:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:29,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 07:57:29,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:29,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 681 [2020-09-25 07:57:29,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:29,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:57:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:57:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 07:57:29,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:29,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:29,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:29,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:29,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:57:29,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:29,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:29,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:57:29,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:29,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293433763] [2020-09-25 07:57:29,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:29,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:57:29,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461353829] [2020-09-25 07:57:29,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:57:29,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:29,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:57:29,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:57:29,829 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:57:31,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:31,651 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 07:57:31,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:57:31,653 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-09-25 07:57:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:31,676 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 07:57:31,676 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 07:57:31,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:57:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 07:57:31,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 07:57:31,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 07:57:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 07:57:31,795 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 60 [2020-09-25 07:57:31,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:31,796 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 07:57:31,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:57:31,799 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 07:57:31,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 07:57:31,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:31,826 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:31,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:57:31,827 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:31,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:31,827 INFO L82 PathProgramCache]: Analyzing trace with hash 495482008, now seen corresponding path program 1 times [2020-09-25 07:57:31,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:31,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823395315] [2020-09-25 07:57:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:31,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:32,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:32,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:32,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:33,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 07:57:33,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:57:33,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1756 [2020-09-25 07:57:33,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:33,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:33,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:57:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:33,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:33,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:33,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:33,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:33,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:33,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:57:33,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:33,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:33,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:33,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:57:33,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:33,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:33,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:33,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:33,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 07:57:33,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:33,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 07:57:33,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:33,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:33,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:33,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:33,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:33,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:34,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823395315] [2020-09-25 07:57:34,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:34,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:34,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431739464] [2020-09-25 07:57:34,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:34,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:34,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:34,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:34,033 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 07:57:36,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:36,451 INFO L93 Difference]: Finished difference Result 1503 states and 1930 transitions. [2020-09-25 07:57:36,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:57:36,451 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-25 07:57:36,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:36,458 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 07:57:36,458 INFO L226 Difference]: Without dead ends: 975 [2020-09-25 07:57:36,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:57:36,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-09-25 07:57:36,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 892. [2020-09-25 07:57:36,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-09-25 07:57:36,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1129 transitions. [2020-09-25 07:57:36,514 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1129 transitions. Word has length 140 [2020-09-25 07:57:36,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:36,515 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1129 transitions. [2020-09-25 07:57:36,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1129 transitions. [2020-09-25 07:57:36,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 07:57:36,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:36,520 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:36,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:57:36,521 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:36,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:36,521 INFO L82 PathProgramCache]: Analyzing trace with hash -273743075, now seen corresponding path program 1 times [2020-09-25 07:57:36,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:36,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521523478] [2020-09-25 07:57:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:36,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:36,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:38,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:40,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:40,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 07:57:40,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:57:40,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3937 [2020-09-25 07:57:40,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:40,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:40,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:40,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:57:40,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:57:40,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:40,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:40,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:40,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:40,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:40,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:40,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:57:40,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:40,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:40,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:40,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:40,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:40,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:40,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:40,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:40,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:40,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 07:57:40,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:40,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:40,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:57:40,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:40,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:40,871 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:40,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521523478] [2020-09-25 07:57:40,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:40,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:57:40,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256876875] [2020-09-25 07:57:40,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:57:40,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:40,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:57:40,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:57:40,875 INFO L87 Difference]: Start difference. First operand 892 states and 1129 transitions. Second operand 6 states. [2020-09-25 07:57:43,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:43,713 INFO L93 Difference]: Finished difference Result 2776 states and 3717 transitions. [2020-09-25 07:57:43,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:57:43,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2020-09-25 07:57:43,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:43,726 INFO L225 Difference]: With dead ends: 2776 [2020-09-25 07:57:43,726 INFO L226 Difference]: Without dead ends: 1899 [2020-09-25 07:57:43,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:57:43,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2020-09-25 07:57:43,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1828. [2020-09-25 07:57:43,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1828 states. [2020-09-25 07:57:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1828 states to 1828 states and 2437 transitions. [2020-09-25 07:57:43,799 INFO L78 Accepts]: Start accepts. Automaton has 1828 states and 2437 transitions. Word has length 149 [2020-09-25 07:57:43,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:43,800 INFO L479 AbstractCegarLoop]: Abstraction has 1828 states and 2437 transitions. [2020-09-25 07:57:43,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:57:43,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1828 states and 2437 transitions. [2020-09-25 07:57:43,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 07:57:43,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:43,804 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:43,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:57:43,805 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:43,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:43,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1025965989, now seen corresponding path program 1 times [2020-09-25 07:57:43,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:43,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365082457] [2020-09-25 07:57:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:43,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:44,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:44,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:44,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:44,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:46,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:46,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 07:57:46,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:57:46,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2419 [2020-09-25 07:57:46,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:46,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:46,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:57:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:57:46,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:57:46,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:46,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:46,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:46,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:46,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:46,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:46,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:57:46,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:46,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:46,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:57:46,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:46,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:46,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:46,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:46,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:57:46,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:46,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 07:57:46,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:46,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:46,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:57:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:57:46,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:57:46,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:46,662 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:57:46,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365082457] [2020-09-25 07:57:46,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:57:46,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:57:46,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815772236] [2020-09-25 07:57:46,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:57:46,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:46,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:57:46,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:57:46,665 INFO L87 Difference]: Start difference. First operand 1828 states and 2437 transitions. Second operand 7 states. [2020-09-25 07:57:49,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:49,026 INFO L93 Difference]: Finished difference Result 4923 states and 6869 transitions. [2020-09-25 07:57:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 07:57:49,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-09-25 07:57:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:49,056 INFO L225 Difference]: With dead ends: 4923 [2020-09-25 07:57:49,056 INFO L226 Difference]: Without dead ends: 3110 [2020-09-25 07:57:49,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 07:57:49,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3110 states. [2020-09-25 07:57:49,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3110 to 2626. [2020-09-25 07:57:49,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2626 states. [2020-09-25 07:57:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 3445 transitions. [2020-09-25 07:57:49,263 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 3445 transitions. Word has length 151 [2020-09-25 07:57:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:49,263 INFO L479 AbstractCegarLoop]: Abstraction has 2626 states and 3445 transitions. [2020-09-25 07:57:49,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:57:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 3445 transitions. [2020-09-25 07:57:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-25 07:57:49,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:49,274 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:49,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:57:49,275 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:49,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:49,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1270686682, now seen corresponding path program 1 times [2020-09-25 07:57:49,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:49,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907534171] [2020-09-25 07:57:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:49,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:49,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:51,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:51,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:51,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:53,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:54,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 07:57:54,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:57:54,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-09-25 07:57:54,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:54,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:57:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:57:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 07:57:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:54,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:57:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:54,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:54,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:57:54,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:54,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:57:54,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:54,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:57:54,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:54,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:57:54,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:54,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:57:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:54,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:54,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:57:54,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:57:54,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 07:57:54,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:54,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:54,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:57:54,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:54,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:57:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:54,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:57:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:54,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:54,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:55,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:57:55,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:57:55,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:57:55,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-25 07:57:55,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:57:55,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:57:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:57:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:57:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:57:55,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:57:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 96 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 07:57:55,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907534171] [2020-09-25 07:57:55,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:57:55,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:57:55,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843753760] [2020-09-25 07:57:55,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:57:55,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:57:55,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:57:55,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:57:55,260 INFO L87 Difference]: Start difference. First operand 2626 states and 3445 transitions. Second operand 9 states. [2020-09-25 07:57:59,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:59,362 INFO L93 Difference]: Finished difference Result 6221 states and 8439 transitions. [2020-09-25 07:57:59,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:57:59,363 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 232 [2020-09-25 07:57:59,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:59,382 INFO L225 Difference]: With dead ends: 6221 [2020-09-25 07:57:59,382 INFO L226 Difference]: Without dead ends: 3741 [2020-09-25 07:57:59,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:57:59,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2020-09-25 07:57:59,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 3540. [2020-09-25 07:57:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3540 states. [2020-09-25 07:57:59,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 4574 transitions. [2020-09-25 07:57:59,521 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 4574 transitions. Word has length 232 [2020-09-25 07:57:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:59,521 INFO L479 AbstractCegarLoop]: Abstraction has 3540 states and 4574 transitions. [2020-09-25 07:57:59,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:57:59,521 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 4574 transitions. [2020-09-25 07:57:59,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-25 07:57:59,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:59,527 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:57:59,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:57:59,528 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:59,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:59,528 INFO L82 PathProgramCache]: Analyzing trace with hash -396992247, now seen corresponding path program 1 times [2020-09-25 07:57:59,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:59,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713190827] [2020-09-25 07:57:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:59,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:59,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:00,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:00,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:00,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:00,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:03,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:03,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:03,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:04,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-09-25 07:58:04,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:58:04,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 07:58:04,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:04,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:04,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:58:04,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:58:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 07:58:04,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:04,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:58:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:04,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:04,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:58:04,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:04,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:58:04,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:04,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:04,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:58:04,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:04,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:58:04,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:04,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:58:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:04,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:04,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:04,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:58:04,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:58:04,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 07:58:04,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:04,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:04,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:58:04,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:04,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 07:58:04,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:58:05,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:58:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:05,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:05,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:58:05,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 07:58:05,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:58:05,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 07:58:05,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:58:05,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:58:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:58:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:58:05,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:58:05,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:58:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 96 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-09-25 07:58:05,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713190827] [2020-09-25 07:58:05,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:58:05,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:58:05,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92231634] [2020-09-25 07:58:05,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:58:05,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:58:05,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:58:05,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:58:05,508 INFO L87 Difference]: Start difference. First operand 3540 states and 4574 transitions. Second operand 9 states. [2020-09-25 07:58:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:58:09,377 INFO L93 Difference]: Finished difference Result 7286 states and 9501 transitions. [2020-09-25 07:58:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:58:09,378 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 241 [2020-09-25 07:58:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:58:09,397 INFO L225 Difference]: With dead ends: 7286 [2020-09-25 07:58:09,397 INFO L226 Difference]: Without dead ends: 3885 [2020-09-25 07:58:09,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:58:09,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2020-09-25 07:58:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3839. [2020-09-25 07:58:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3839 states. [2020-09-25 07:58:09,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 4898 transitions. [2020-09-25 07:58:09,513 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 4898 transitions. Word has length 241 [2020-09-25 07:58:09,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:58:09,513 INFO L479 AbstractCegarLoop]: Abstraction has 3839 states and 4898 transitions. [2020-09-25 07:58:09,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:58:09,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 4898 transitions. [2020-09-25 07:58:09,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 07:58:09,519 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:58:09,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:58:09,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:58:09,520 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:58:09,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:58:09,520 INFO L82 PathProgramCache]: Analyzing trace with hash -768018093, now seen corresponding path program 1 times [2020-09-25 07:58:09,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:58:09,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953647716] [2020-09-25 07:58:09,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:58:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:58:09,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:09,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:58:10,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking...